Add 40/42 and 90/16
1st number: 40/42, 2nd number: 5 10/16
40/42 + 90/16 is 1105/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
40/42 = 40 × 8/42 × 8 = 320/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
90/16 = 90 × 21/16 × 21 = 1890/336 - Add the two like fractions:
320/336 + 1890/336 = 320 + 1890/336 = 2210/336 - 2210/336 simplified gives 1105/168
- So, 40/42 + 90/16 = 1105/168
In mixed form: 697/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42+90/16 40/84+90/16 40/42+90/32 40/42+90/48 40/42+90/80